NBN EN 50018 : 2001

GENERAL
1 Scope
2 Normative references
3 Definitions
4 Apparatus grouping and temperature classification
SPECIFIC CONSTRUCTIONAL REQUIREMENTS
5 Flameproof joints
6 Cemented joints
7 Operating rods
8 Supplementary requirements for shaft and bearings
9 Light-transmitting parts
10 Breathing and draining devices which form part of a
   flameproof enclosure
11 Fasteners, associated holes and closing devices
12 Materials and mechanical strength of enclosures;
   materials inside the enclosures
13 Entries for flameproof enclosures
VERIFICATIONS AND TESTS
14 General
15 Type tests
16 Routine tests
OTHER REQUIREMENTS
17 Switchgear
18 Lampholders and lampcaps
19 Non-metallic enclosures and non-metallic parts of
   enclosures
20 Pressure transducers using capillaries
ANNEX A (normative) Additional requirements for crimped
        ribbon elements of breathing and draining devices
ANNEX B (normative) Additional requirements for elements,
        with non-measurable paths, of breathing and draining
        devices
ANNEX C (normative) Additional requirements for flameproof
        cable entries
ANNEX D (normative) Additional requirements for Group I,
        IIA and IIB for empty flameproof enclosures to be
        certified as Ex components and the utilization of
        such Ex Component certificates to obtain certificates
ANNEX E (normative) Cells and batteries used in flameproof
        'd' enclousers
Bibliography

Defines the specific requirements for the construction and testing of electrical apparatus with type of protection flameproof enclosure 'd' meant for use in potentially explosive atmospheres.